clemsonfor
Super Member
Not doubting you and the study you quote but we are talking about a 30 yr old yanmar in this post, not sure if that will make a difference or not?
idleing tractor for awhile
- Thread starter criddlesperger
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Not doubting you and the study you quote but we are talking about a 30 yr old yanmar in this post, not sure if that will make a difference or not?
I wouldnt let mine sit and idle all day that would be dumb but I am not going to shut it down every time I get off either that could be 50 times seems like some days, if someone wants to talk it gets shut down but that's about it.
20 20
Elite Member
Like I said the study I read was done in the 90's{early} that's allmost 20 years{wow time flies}. I would not think it would make a huge difference the basic's are still in play.
I'm not trying to preach just trying to explain what I have read and was even told by a diesel tech or 2. I'll try to post a couple of small paragraphs from different sources.
Idling Causes Excessive Engine Wear
Running an engine at low speed (idling) causes twice the
wear on internal parts compared to driving at regular
speeds. According to the American Trucking Association,
such wear can increase maintenance costs by almost
$2,000 per year and shorten the life of the engine.
one from IDEM;
Letting an engine idle actually does more damage to the engine than starting and stopping. Running an engine at low speed (idling) causes twice the wear on internal parts compared to driving at regular highway speeds, which can increase maintenance costs and shorten the life of the engine
These are just a couple of short paragraphs that say it will cause damage, there are more. These examples were written by techs not me so take it for what it is worth, your choice.
Schoolsout, mentioned Diesels are made to run continuously... This is true but they are ment to run at proper RPM, not idle.
BATTY54
Silver Member
I remember reading about the JD/Yanmar tractors, if parked and run for any length of time such as PTO work you need to leave the range or gear lever engaged to provide lubrication to the transmission bearings. It might be in my owners manual I will have to check.
i am building a house and using the tractor alot, when i idle the tractor should i leave the powershift and the transmission both in neutral it is a ym2010. thanks
20 20
Elite Member
Please understand I'm writting about continuous idle, not running, stopping to jump off hook a chain then take off again. I would say if it is going to idle more then 5min then shut it down. According to what I have read, and been told{especially on newer machines 25-30yrs or newer} idling will even cause more harm then restarting.
No I got ya I know what you were getting at I didn't mean to sound like I disagreed sorry! :thumbsup:
My Yanmar is 30 yrs old probly so its in the other group but for me even when I am idling its at 1200-1300 rpm range which is about the lower end of the work range it does normally anyway. Btw mine is powershift and I leave the main box in gear so the pump is running.
So I am not real worried about even a 10 minute idle heck I never know how long I will be off the thing just depends on what or who catches my attention. :laughing:
WM75Guy
Elite Member
Most fire departments stick to one brand of motors for various reasons. Firetrucks idle for long periods of time at a scene, 4-8 hours was not uncommon, as you need the electrical power for lights, AC, power to equipment, etc. The Detroit 60 series and if memory serves me the 70 series had a problem with not having enough oil pressure to lubricate the top end of the motor at idle. Several departments that bought trucks with Detroits had to overhaul engines much more frequently than those with Cummins or Cat motors due to this. I would be worried about the same problem with any motor at idle for an extended length of time. Getting on and off for a few minutes shouldn't matter. More than 10-15 minutes, I shut it down.
California
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I don't think Yanmars have that weakness.
My oil warning light sender failed and I experimented with a conventional gauge temporarily. I never saw below 18psi, warm, and that at a lower speed than I would normally idle due to excessive 'diesel knock' - clanking.
Neat 1500
Platinum Member
we buy diesel engined vans for this very reason. they can idle anywhere from 10 mins to 10 or more hours! in my working life have never seen one of these die from leaving them idling. one of my prior toyota's had 662k (km) on it when we retired it, never,ever did it have any issues. my 1500 has approx 30 PSI at idle cold and 45 PSI hot so i dont think it will ever have lubrication issues at idle. mine does spend a bit of time idling, if i keep start/stopping it the battery runs down considerably.
Seems unusual to me to have a higher oil pressure after warming up.